http://www.guardian.co.uk/lifeandstyle/2011/feb/09/sleep-medical-research
Sleep deprivation increases stroke
and heart disease risk
Researchers at the University of Warwick linked a lack of sleep to a range
of disorders which often result in early death. Prolonged sleep deprivation increases the
risk of suffering from a stroke or heart disease, according to a major
long-term study based on the experiences of hundreds of thousands of people
across eight countries. The trend for late nights and early mornings was
described as "a ticking time bomb" by the researchers at the
University of Warwick who linked a lack of sleep to a range of disorders which
often result in early death.
Chronic short sleep produce hormones
and chemicals in the body, which increases the risk of developing heart
disease, strokes and other conditions such as high blood pressure and
cholesterol, diabetes and obesity, according to Dr Michelle Miller of the
University of Warwick. She and Professor Francesco Cappuccio, who co-authored a
report published in the European Heart Journal, followed up evidence spanning
seven to 25 years from more than 470,000 participants across eight countries,
including Japan, the US, Sweden and the UK.
Professor Francesco Cappuccio said:
"If you sleep less than six hours per night and have disturbed sleep you
stand a 48% greater chance of developing or dying from heart disease and a 15%
greater chance of developing or dying from a stroke. The trend for late nights
and early mornings is actually a ticking time bomb for our health so you need
to act now to reduce your risk of developing these life-threatening
conditions." Professor Cappuccio added: "There is an expectation in
today's society to fit more into our lives. The whole work/life balance
struggle is causing too many of us to trade in precious sleeping time to ensure
we complete all the jobs we believe are expected of us." "But in
doing so, we are significantly increasing the risk of suffering a stroke or
developing cardiovascular disease resulting in, for example, heart
attacks."
He also warned of the implications
of sleeping too much, more than nine hours at a stretch, which may be an
indicator of illness, such as cardiovascular disease. He said: "By
ensuring you have about seven hours' sleep a night, you are protecting your
future health, and reducing the risk of developing chronic illnesses. The link
is clear from our research: get the sleep you need to stay healthy and live
longer." Ellen Mason, senior cardiac nurse at the British Heart
Foundation, said: "We know sleep is essential for staying healthy and this
research adds further evidence about the possible consequences for our health
if we don't get enough.
"Although there appears to be
an association between heart and circulatory disease and lack of sleep, it is
not yet fully understood. There seem to be some hormonal and chemical changes
in the body when lack of sleep occurs, so over a period of time these may have
some impact on the heart and circulatory system." "There are plenty
of reasons why sleep deprivation is a problem. Easy internet access, a growing
number of TV channels, financial worries and longer working hours all distract
us from going to bed. But it's important more of us make sleep a priority and
get our restorative six-eight hours a night."
P/S : Kurang tidur juga boleh
sebabkan kanser! Kurang tidur → sistem imun badan jadi lemah → Antibodi dan sel
pagosit tak mampu menelan atau membunuh sel sel kanser → sel sel kanser bercambah → serta merebak → full fledge
kanser
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